So it was an opportunity to rewrite my monitoring script from scratch.It’s now time to share it with you.If you want more information about the purpose, the way I’ve made the integration, etc. don’t hesitate to read my previous post as the only modifications are the code and the type of information the script can gather from the array.

Instead of writing a script for each part of the monitoring (volumes, array, disks,…), I’ve put everything in one file called “PureStorageMonitoring.py”.The dependencies are still the same : purestorage and urllib3 libraries from Python and Python 3.x

A complete list of datas and triggers that will be gathered by the script is available at the end of this post.

Important note : This script has been tested with Zabbix 3.4.x and 4.0.x and Pure Storage 4.10.8 (REST API version 1.12). I cannot guarantee that it will work fine with any other version even if I made my best regarding this point. The template available is exported from Zabbix 4.0.x so you will have to delete some settings to import it in Zabbix 3.4.x don’t hesitate to contact me in case of trouble.

Setup the proxy or server

To gather data, we need to make some works on the Zabbix Proxy or Zabbix Server.

Be sure that you have Python 3.x installed on the server

Install the pip packages

pip3 install purestorage urllib3 py-zabbix

Get API Token

To be able to use the REST API of Pure Storage, you have to find your API Token on the web interface.Go on “SYSTEM”, then “Users” and under the Users menu, you will find “API Tokens”. Click on the three dots on the right of the screens and use “Show API Token” to get your API Token.

Download the scripts

The script is available on my Github repository.You can download it on the server using the following steps :

Find the directory where you have to download it, by looking at the value of “ExternalScripts” setting of your proxy or server (by default it’s “/usr/local/share/zabbix/externalscripts” but if like me you are using the official Debian packages from Zabbix, it will be “/usr/lib/zabbix/externalscritps”

To be able to give information about this POC to everybody inside the team, we needed a dashboard. So with the help of Flash Array Rest API, Zabbix and Grafana, I produced this dashboard :

Please, bear in mind : These scripts and the Zabbix template are a "Work in progress". Currently we are on a POC and not yet in production so other elements will be added (triggers, items, etc.) and this post will be updated.

Zabbix integration

The Zabbix integration is made of :

Python scripts and libraries

FlashArray Rest API

Zabbix Sender (with Trapper items)

Zabbix ExternalScripts (executed on Zabbix Server or Proxy)

Low-Level discovery

Zabbix Macro

There are four scripts :

LLD_PureVolume.py

PureArrayInfo.py

PureArrayMonitor.py

PureVolumeMonitor.py

How it works

There are two parts in the Zabbix template :

Discovery rules

Static items

The LLD_PureVolume.py is responsible of the discovery rule. Zabbix will use it to get the list of existing volumes on the FlashArray and will create the corresponding items. The PureArrayInfo.py and PureArrayMonitor.py are responsible of gathering the data from the Array point of view. The PureVolumeMonitor.py is responsible of gathering data from the volume point of view using the items that will be created by the discovery rules. As all the data are in the same JSON output when we query the FlashArray API, the scripts will gather all information at the same time and will use the Zabbix Sender to populate all the Trapper items at each execution instead of launching the scripts for each items. The scripts will return “1” at the end and store it in an item called “Pure Array Info Launch”,”Pure Array Monitoring Launch” or “VolumeName Monitoring Launch”.

Be ready

Important note : We are using Zabbix 3.4.x. So you could face some problems while importing the template. Let me know if it’s the case.

Before we start with the integration into Zabbix, be sure to have the following tools installed on your Zabbix Proxy or Server :

Python 3.x

purestorage and urllib3 libraries You can install them on your system by running the following command :

Get the necessary information

Before going further, you will need to gather the following information from your Pure Storage FlashArray :

IP

API Token

To get the API Token, open your Flash Array web interface and go on "API Tokens" menu under the "Users" menu that you will find in the "SYSTEM" tab.

You will see a list of users and three dots on the right of the screen. Click on it and finally select "Show API Token"

Let's start

If your system is ready and you have all the information at hand, let's start the integration on your system.

Download the scripts and the template

All the scripts and template are available on my GitHub repository. Download all those files and put the scripts on your ExternalScripts directory on your Zabbix Proxy or Server. By default this directory is : /usr/local/share/zabbix/externalscripts but check your Zabbix configuration file if you have any doubt. By example, we are using the official Zabbix packages for Debian and this directory is /usr/lib/zabbix/externalscripts

Set the good rights

To allow Zabbix to execute those scripts you must allow them to be executed and owned by the Zabbix user on your system. You can execute the following commands (under the ExternalScripts directory) :

In this case, Nginx will be configured to allow the Let’s Encrypt server to get the challenge file in the “/.well-known/acme-challenge” directory. To do that, you will have to create the following directory : “/var/www/git” and give Nginx the right to read files on it.

If like me, you are a user of WinSCP, maybe you would like to save your configuration. The configuration of WinSCP contains all the information needed to get access to your servers (IP, protocol, …). It could be valuable to save all those information in case of computer crash or if you want to sync this configuration between two computers.

To do this, you have two choices. You can manually export the configuration file after each change or you can add the WinSCP file to your backup or synchronization software.

If you want to use the second method, you can get all the settings from the Windows registry or from a text file stored in the AppData.

To use this last method you have to go to the settings and select the “Storage” sub-menu.

In this menu, you have to select “INI file”.

As soon this settings is validated, you will find a “WinSCP.ini” file under the “Roaming” directory of the AppData linked to your Windows profile.